Card Number Validation in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 526th MeWhenI 🇻🇦 567 164 6 Oct 2024 527th KatieLG 🇬🇧 561 85 12 Jan 2025 528th jipsong 🇩🇪 560 115 12 May 2025 529th aliakseikalosha 557 127 10 Oct 2024 530th rowechenzhong 555 116 17 Oct 2024 531st MeWhenI 🇻🇦 554 290 2 Oct 2024 532nd madex 🇩🇪 553 116 1 Oct 2024 533rd JDiLenarda 🇫🇷 553 165 1 Oct 2024 534th dtbao20 🇻🇳 551 117 1 Oct 2024 534th Pyroan 551 117 22 Feb 2025 536th edsrzf 🇳🇿 551 135 27 Feb 2025 537th msbranicky 550 185 20 Jan 2025 538th mousetail 🇳🇱 547 94 3 Oct 2024 539th mousetail 🇳🇱 547 128 3 Oct 2024 540th emgordon154 546 52 3 Nov 2024 541st elgan65536 546 118 2 Oct 2024 541st logvp 546 118 6 Oct 2024 541st ahmetdemirag 🇨🇾 546 118 6 Feb 2025 541st dirckvdende 546 118 12 days ago 545th zakariamouhid 544 118 1 Oct 2024 546th xyangst 543 171 1 Oct 2024 547th jtaxen 541 119 21 Oct 2024 547th psbpsbp 541 119 19 Dec 2024 547th klixel 🇨🇦 541 119 9 Apr 2025 550th najs91 540 131 15 Oct 2024 550th bac0id 540 131 9 Jan 2025 552nd eranws 539 119 23 Dec 2024 553rd TaserTheFox 🇺🇸 537 120 8 Oct 2024 553rd yokasuretsu 537 120 26 Jan 2025 553rd Troon 537 120 17 Feb 2025 556th Sciman101 536 147 26 Mar 2025 557th BREMAUCY 🇫🇷 532 121 5 days ago 558th msbranicky 531 175 13 Dec 2024 559th deancureton 530 121 30 Dec 2024 560th chartung17 528 122 24 Mar 2025 561st msbranicky 527 126 9 Jan 2025 562nd msbranicky 524 123 3 Oct 2024 562nd bobbysq 524 123 5 Oct 2024 562nd wuzekai518 524 123 8 Oct 2024 562nd vhoulbreque 🇫🇷 524 123 4 Feb 2025 566th galloj 🇨🇿 522 112 4 Oct 2024 567th NotEvenIndian 520 124 22 Oct 2024 567th ridingqwerty 🇺🇸 520 124 16 Jan 2025 569th bnic24 515 125 3 Oct 2024 569th adoxography 515 125 22 Oct 2024 571st sidok 514 109 13 Nov 2024 572nd nephila-nacrea 🇬🇧 509 77 2 Oct 2024 573rd dokutan 509 143 19 Oct 2024 574th KatieLG 🇬🇧 509 146 2 Oct 2024 575th CatsAreFluffy 507 127 30 Oct 2024 575th WillowWispy 507 127 25 May 2025 577th Chinay-Domitrix 🇺🇸 507 131 30 Mar 2025 578th KatieLG 🇬🇧 506 140 1 Oct 2024 579th msbranicky 505 138 3 Oct 2024 580th lelbal 503 128 2 Oct 2024 580th Lv0Sys 🇵🇱 503 128 15 Jun 2025 582nd albanian-laundromat 499 88 20 days ago 583rd madex 🇩🇪 499 129 2 Oct 2024 583rd RedzGoose 🇦🇺 499 129 15 Oct 2024 583rd calebaitken 499 129 11 Apr 2025 586th MeWhenI 🇻🇦 499 149 4 Oct 2024 587th janAkali 🇷🇺 497 167 8 Oct 2024 588th Europe2048 496 130 2 Oct 2024 588th nstearns96 🇬🇧 496 130 2 Oct 2024 588th rollershutter 496 130 10 Jan 2025 588th Stockoh 🇫🇷 496 130 19 days ago 592nd jlangvand 496 141 15 Oct 2024 592nd HumanoidCPU 496 141 7 Mar 2025 594th inverseLorentz 🇦🇺 492 131 7 Oct 2024 594th sciencejiho 492 131 11 Feb 2025 594th Jaydosu 492 131 11 Apr 2025 597th TheRealOhead 🇺🇸 490 131 1 Oct 2024 598th HumanoidCPU 488 145 5 Oct 2024 599th Mabeloid 🇳🇴 484 133 2 Oct 2024 599th Emutis 🇱🇹 484 133 4 Feb 2025 Prev 526–600 of 716 Next